シジュウカラ日記 (4) ヒナ誕生、動画 Titmice diary (4), birth of chicks, video

https://youtu.be/Gmibud8u0ag （6分）

5月16日の産卵開始、5月25日に7個の抱卵開始、6月6日の日中、ヒナ5匹が次々と誕生しました。

動画の前半は13時頃に3匹目のヒナが誕生した直後の様子です。また、後半はその後、約10分後に父親シジュカラが母シジュカラに餌を運び込んできた時の様子です。

卵の殻は卵のふ化後に母親が食べています。

父親シジュカラは巣の中で餌を母シジュカラに渡しますが、2匹で協力してヒナが食べられるくらいに餌を細かくしています。この時、お互いに何か会話しています。

母シジュカラはヒナとまだ孵化していない卵を抱きながら、時々数分くらい食事にも出かけます。

3日後の今日時点では、ヒナたちは親が巣箱の外に帰った時点で気づき、大きな口をあけて餌をせがんでいます。雨の中で大変です。

巣は巣箱の中ですが、巣箱は窓ガラスの外側、3メートルほど離れた我が家の庭のハナミヅキの木に設置しています。

ちょうど梅雨時期に誕生しましたので、今回のBGMは私自身の一人二重奏の「雨だれ（G.C.リンゼイ作曲」です。

https://youtu.be/Gmibud8u0ag (6 minutes)

Egg laying began on May 16, and the seven eggs were incubated starting on May 25. Five chicks were born one after another during the day on June 6.

The first half of the video shows the scene immediately after the third chick was born around 1:00 p.m. The second half shows the scene inside the nest about 10 minutes later, when the father tit carried food in for the mother tit.

The mother eats the eggshells immediately after hatching.

The father titmouse feeds the mother in the nest, and the two work together to break the food into small pieces so the chicks can eat it. At this time, they seem to be communicating with each other.

The mother titmouse warms the chicks and unhatched eggs, occasionally leaving the nest for a few minutes to eat.

As of today, three days later, the chicks sense when the parents return to the nest box, opening their mouths wide and begging for food. It is a very hard work for the parent birds in the rain.

The nest is inside a nest box installed on a dogwood tree in our garden, which about two meters away from the window.

Since the chicks were born during the rainy season, the background music for this episode is my own one-person performance of "Rain Drops" (composed by G.C. Lindsey).